1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
|
// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/subresource_filter/content/renderer/web_document_subresource_filter_impl.h"
#include <memory>
#include <utility>
#include "base/bind.h"
#include "base/memory/ref_counted.h"
#include "base/message_loop/message_loop.h"
#include "components/subresource_filter/core/common/activation_state.h"
#include "components/subresource_filter/core/common/load_policy.h"
#include "components/subresource_filter/core/common/memory_mapped_ruleset.h"
#include "third_party/blink/public/platform/web_url.h"
#include "third_party/blink/public/platform/web_url_request.h"
#include "url/gurl.h"
#include "url/origin.h"
namespace subresource_filter {
namespace proto = url_pattern_index::proto;
namespace {
using WebLoadPolicy = blink::WebDocumentSubresourceFilter::LoadPolicy;
proto::ElementType ToElementType(
blink::WebURLRequest::RequestContext request_context) {
switch (request_context) {
case blink::WebURLRequest::kRequestContextAudio:
case blink::WebURLRequest::kRequestContextVideo:
case blink::WebURLRequest::kRequestContextTrack:
return proto::ELEMENT_TYPE_MEDIA;
case blink::WebURLRequest::kRequestContextBeacon:
case blink::WebURLRequest::kRequestContextPing:
return proto::ELEMENT_TYPE_PING;
case blink::WebURLRequest::kRequestContextEmbed:
case blink::WebURLRequest::kRequestContextObject:
case blink::WebURLRequest::kRequestContextPlugin:
return proto::ELEMENT_TYPE_OBJECT;
case blink::WebURLRequest::kRequestContextEventSource:
case blink::WebURLRequest::kRequestContextFetch:
case blink::WebURLRequest::kRequestContextXMLHttpRequest:
return proto::ELEMENT_TYPE_XMLHTTPREQUEST;
case blink::WebURLRequest::kRequestContextFavicon:
case blink::WebURLRequest::kRequestContextImage:
case blink::WebURLRequest::kRequestContextImageSet:
return proto::ELEMENT_TYPE_IMAGE;
case blink::WebURLRequest::kRequestContextFont:
return proto::ELEMENT_TYPE_FONT;
case blink::WebURLRequest::kRequestContextFrame:
case blink::WebURLRequest::kRequestContextForm:
case blink::WebURLRequest::kRequestContextHyperlink:
case blink::WebURLRequest::kRequestContextIframe:
case blink::WebURLRequest::kRequestContextInternal:
case blink::WebURLRequest::kRequestContextLocation:
return proto::ELEMENT_TYPE_SUBDOCUMENT;
case blink::WebURLRequest::kRequestContextScript:
case blink::WebURLRequest::kRequestContextServiceWorker:
case blink::WebURLRequest::kRequestContextSharedWorker:
return proto::ELEMENT_TYPE_SCRIPT;
case blink::WebURLRequest::kRequestContextStyle:
case blink::WebURLRequest::kRequestContextXSLT:
return proto::ELEMENT_TYPE_STYLESHEET;
case blink::WebURLRequest::kRequestContextPrefetch:
case blink::WebURLRequest::kRequestContextSubresource:
return proto::ELEMENT_TYPE_OTHER;
case blink::WebURLRequest::kRequestContextCSPReport:
case blink::WebURLRequest::kRequestContextDownload:
case blink::WebURLRequest::kRequestContextImport:
case blink::WebURLRequest::kRequestContextManifest:
case blink::WebURLRequest::kRequestContextUnspecified:
default:
return proto::ELEMENT_TYPE_UNSPECIFIED;
}
}
WebLoadPolicy ToWebLoadPolicy(LoadPolicy load_policy) {
switch (load_policy) {
case LoadPolicy::ALLOW:
return WebLoadPolicy::kAllow;
case LoadPolicy::DISALLOW:
return WebLoadPolicy::kDisallow;
case LoadPolicy::WOULD_DISALLOW:
return WebLoadPolicy::kWouldDisallow;
default:
NOTREACHED();
return WebLoadPolicy::kAllow;
}
}
void ProxyToTaskRunner(scoped_refptr<base::SingleThreadTaskRunner> task_runner,
base::OnceClosure callback) {
task_runner->PostTask(FROM_HERE, std::move(callback));
}
} // namespace
WebDocumentSubresourceFilterImpl::~WebDocumentSubresourceFilterImpl() = default;
WebDocumentSubresourceFilterImpl::WebDocumentSubresourceFilterImpl(
url::Origin document_origin,
ActivationState activation_state,
scoped_refptr<const MemoryMappedRuleset> ruleset,
base::OnceClosure first_disallowed_load_callback,
bool is_associated_with_ad_subframe)
: activation_state_(activation_state),
filter_(std::move(document_origin), activation_state, std::move(ruleset)),
first_disallowed_load_callback_(
std::move(first_disallowed_load_callback)),
is_associated_with_ad_subframe_(is_associated_with_ad_subframe) {}
WebLoadPolicy WebDocumentSubresourceFilterImpl::GetLoadPolicy(
const blink::WebURL& resourceUrl,
blink::WebURLRequest::RequestContext request_context) {
return getLoadPolicyImpl(resourceUrl, ToElementType(request_context));
}
WebLoadPolicy
WebDocumentSubresourceFilterImpl::GetLoadPolicyForWebSocketConnect(
const blink::WebURL& url) {
DCHECK(url.ProtocolIs("ws") || url.ProtocolIs("wss"));
return getLoadPolicyImpl(url, proto::ELEMENT_TYPE_WEBSOCKET);
}
void WebDocumentSubresourceFilterImpl::ReportDisallowedLoad() {
if (!first_disallowed_load_callback_.is_null())
std::move(first_disallowed_load_callback_).Run();
}
bool WebDocumentSubresourceFilterImpl::ShouldLogToConsole() {
return activation_state().enable_logging;
}
bool WebDocumentSubresourceFilterImpl::GetIsAssociatedWithAdSubframe() const {
return is_associated_with_ad_subframe_;
}
WebLoadPolicy WebDocumentSubresourceFilterImpl::getLoadPolicyImpl(
const blink::WebURL& url,
proto::ElementType element_type) {
if (filter_.activation_state().filtering_disabled_for_document ||
url.ProtocolIs(url::kDataScheme)) {
++filter_.statistics().num_loads_total;
return WebLoadPolicy::kAllow;
}
// TODO(pkalinnikov): Would be good to avoid converting to GURL.
return ToWebLoadPolicy(filter_.GetLoadPolicy(GURL(url), element_type));
}
WebDocumentSubresourceFilterImpl::BuilderImpl::BuilderImpl(
url::Origin document_origin,
ActivationState activation_state,
base::File ruleset_file,
base::OnceClosure first_disallowed_load_callback,
bool is_associated_with_ad_subframe)
: document_origin_(std::move(document_origin)),
activation_state_(std::move(activation_state)),
ruleset_file_(std::move(ruleset_file)),
first_disallowed_load_callback_(
std::move(first_disallowed_load_callback)),
main_task_runner_(base::MessageLoop::current()->task_runner()),
is_associated_with_ad_subframe_(is_associated_with_ad_subframe) {}
WebDocumentSubresourceFilterImpl::BuilderImpl::~BuilderImpl() {}
std::unique_ptr<blink::WebDocumentSubresourceFilter>
WebDocumentSubresourceFilterImpl::BuilderImpl::Build() {
DCHECK(ruleset_file_.IsValid());
DCHECK(!main_task_runner_->BelongsToCurrentThread());
return std::make_unique<WebDocumentSubresourceFilterImpl>(
document_origin_, activation_state_,
base::MakeRefCounted<MemoryMappedRuleset>(std::move(ruleset_file_)),
base::BindOnce(&ProxyToTaskRunner, main_task_runner_,
std::move(first_disallowed_load_callback_)),
is_associated_with_ad_subframe_);
}
} // namespace subresource_filter
|
